My husband found this product online and we drove up to Coloma to a train shop to get it.  I was skeptical but was willing to give it a shot. We went small due to not being sure how well it would work for my sons lego model project for the 4H fair this year.  I am impressed and my son got Reserve Grand Champion on his product.  I am impressed with your product and he can't wait to use it to make a river and some bigger water for next year.